To detect the user’s browser using PHP, you can use the `$_SERVER[‘HTTP_USER_AGENT’]` superglobal variable. This variable contains the user agent string of the browser making the request.

Here’s an example code snippet that detects the user’s browser using PHP:

“`php
$user_agent = $_SERVER[‘HTTP_USER_AGENT’];

if (strpos($user_agent, ‘MSIE’) !== false) {
// The user is using Internet Explorer
echo “Internet Explorer”;
} elseif (strpos($user_agent, ‘Firefox’) !== false) {
// The user is using Firefox
echo “Firefox”;
} elseif (strpos($user_agent, ‘Chrome’) !== false) {
// The user is using Chrome
echo “Chrome”;
} elseif (strpos($user_agent, ‘Safari’) !== false) {
// The user is using Safari
echo “Safari”;
} elseif (strpos($user_agent, ‘Opera Mini’) !== false) {
// The user is using Opera Mini
echo “Opera Mini”;
} else {
// Unknown browser
echo “Unknown browser”;
}
“`

In this example, we’re using the `strpos()` function to search for specific browser strings in the user agent string. If a match is found, we can determine the user’s browser based on the browser string.

You can add more conditions to the if-elseif statements to detect other browsers or specific versions of browsers.